Log Message:
Restructure the following packages:

	editors/elvis
	editors/elvis-x11

The latter is now just editors/elvis built with a specific set of
options.  Changes include:

+ Add options.mk that supports a new "x11" option.

+ Remove Makefile.common and move all logic into elvis/Makefile and
  elvis/options.mk.

+ Rename PLIST.common to PLIST as there are no PLIST differences
  between elvis and elvis-x11.

+ Modify patch-ab to add a --sysconfdir option to the configure script
  and fix the parsing of --with-x* options so that --with-xft isn't
  ignored.

+ Modify patch-ac to handle SYSCONFDIR in Makefile.in passed in from the
  configure script.

+ Remove the unnecessary substitution for PKG_SYSCONFDIR now that the
  configure script and Makefile.in directly support --sysconfdir.

+ Include termcap.buildlink3.mk to properly deal with termcap/curses
  issues (elvis needs termcap).

+ Add full DESTDIR support.

+ Set HOMEPAGE to the correct URL.

+ Bump the PKGREVISION for elvis and elvis-x11 to 6.  Both packages
  now track and use the same PKGREVISION number.